CVE-2026-11274 in Chrome
Summary
by MITRE • 06/05/2026
Inappropriate implementation in DOM Distiller in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 06/05/2026
The vulnerability in question represents an inadequate implementation within Google Chrome's DOM Distiller feature on iOS platforms, specifically affecting versions prior to 149.0.7827.53. This security gap stems from insufficient validation mechanisms that govern how the browser processes and renders web content through the DOM Distiller service, which is designed to extract and simplify web page content for more efficient viewing. The flaw manifests as a failure in the navigation restriction enforcement system that should prevent certain types of cross-site navigation attempts. When a malicious actor crafts a specially designed HTML page, the vulnerable implementation allows bypassing intended security boundaries that would normally prevent unauthorized navigation or content access. This issue falls under the category of inadequate input validation and access control mechanisms, aligning with CWE-284 access control vulnerabilities that permit unauthorized access to resources or restricted operations.
The technical exploitation of this vulnerability occurs through carefully constructed HTML content that manipulates the DOM Distiller's parsing and rendering behavior. The attacker crafts a page that exploits the weak validation in the navigation handling code path, enabling the browser to follow navigation directives that should have been blocked by security policies. This bypass mechanism operates at the browser's content processing layer, where the DOM Distiller's security boundaries fail to properly validate navigation targets against established trust models. The vulnerability essentially allows an attacker to create a scenario where the browser's normal security restrictions are circumvented, potentially enabling access to restricted content or triggering unauthorized navigation to malicious sites. The low severity classification indicates that while the vulnerability does allow for navigation bypass, it does not typically enable more serious exploits such as arbitrary code execution or complete system compromise.
The operational impact of this vulnerability extends beyond simple navigation bypass, as it represents a degradation of the browser's security model on iOS platforms. Users may unknowingly be directed to malicious sites or exposed to content that should have been restricted based on security policies. The vulnerability affects the integrity of Chrome's security boundaries and could potentially be chained with other weaknesses to create more significant security impacts. Attackers might leverage this bypass to conduct phishing attacks or deliver malicious content through seemingly legitimate web pages. The issue demonstrates a failure in the principle of least privilege within the browser's content processing pipeline, where navigation restrictions that should apply to all content are selectively bypassed based on the specific implementation details of DOM Distiller.
Mitigation strategies for this vulnerability primarily focus on updating to the patched version of Chrome for iOS, specifically version 149.0.7827.53 or later, which contains the necessary code fixes to properly enforce navigation restrictions. Organizations should implement immediate patch management procedures to ensure all affected iOS devices receive the update. Browser vendors typically address such issues through code modifications that strengthen input validation and access control checks within the DOM Distiller service. The fix likely involves implementing more robust validation of navigation targets and ensuring that all navigation directives are properly evaluated against established security policies before execution. Security teams should monitor for any related vulnerabilities in the DOM Distiller service and ensure comprehensive testing of content processing features. The ATT&CK framework would categorize this vulnerability under privilege escalation or defense evasion techniques, as it allows bypassing security controls that should prevent unauthorized navigation. Users should be educated about the importance of keeping their browsers updated and should avoid visiting untrusted sites that might exploit such vulnerabilities. This incident highlights the importance of maintaining comprehensive security testing for browser content processing features and demonstrates how seemingly minor implementation flaws can create significant security risks in complex software systems.